4. The steps for solving 7x + 3 = 52 are shown. Explain how each step helps solve the equation. Include the phrases, "Isolate the variable by," "Simplify," and "Isolate the variable term by____" in your answers. Original equation 7x+3=52 7x+3-3=52-3 7x = 49 7x_49 - 7 7 X=7